The average temperature at 40,000 feet above sea level is -60 F.
56
One gallon of used motor oil can ruin approximately one million gallons of fresh water!
71
Dr.Jonas Salk, the man who came up with the cure for polio, didn’t patent the drug. This made the drug more affordable to the general public, and he lost out an an estimated $7 billion dollars for himself.
41
When you walk down a steep hill, the pressure on your knees is equal to three times your body weight.
199
The only letter not appearing on the Periodic Table is the letter "J".
180
Optical illusions occur when what the eyes see conflicts with what the brain expects.
75
One third of the electricity produced on earth is used to power electric light bulbs!
75
At room temperature, the average air molecule travels at the speed of a rifle bullet.
55